Air quality index [µg/m3]:
excellent ≤ 12
good ≤ 36
lightly polluted ≤ 60
moderately polluted ≤ 84
heavily polluted ≤ 120
severely polluted > 120
PM 2.5
[µg/m3]
PM 10
HOUR OPOLSKA ST. ROOF (BEFORE FILTERS)  AIR SUPPLIED TO OFFICES
17006excellentexcellent11excellent
16006excellentexcellent11excellent
15004excellentexcellent11excellent
14003excellentexcellent11excellent
13004excellentexcellent11excellent
12007excellentexcellent21excellent
110013goodexcellent31excellent
100011excellentexcellent21excellent
090015goodexcellent31excellent
080022goodexcellent31excellent
070026goodexcellent41excellent
060026goodexcellent41excellent
050027goodexcellent41excellent
040021goodexcellent41excellent
030031goodexcellent51excellent
020032goodexcellent61excellent
010029goodexcellent61excellent
000043lightly pollutedexcellent61excellent
230034goodexcellent61excellent
220035goodexcellent61excellent
210031goodexcellent51excellent
200028goodexcellent51excellent
190033goodexcellent51excellent
180025goodexcellent41excellent